Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Describe the significance of a 5 cap poly A tail on the mature mRNA
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- Diagram the likely secondary structure of an RNA with the sequencearrow_forwardsome eukaryotic mRNAs have internal ribosome binding sites, where ribosomes can bind without first attaching to the 5′ cap. Yet all eukaryotic mRNAs are capped, and cap-dependent translation is highly efficient. What might be the advantage of having internal ribosome binding sites if the cap permits the initiation of translation and all eukaryotic mRNAs are capped?arrow_forwardName the three major types of RNA s,specifying the function of each in the synthesis of polypeptide?arrow_forward
- What would be the minimum length(approximate number of bases) of an mRNAthat coded for a protein 300 amino acidslong?arrow_forwardIf the sequence of a coding strand of a gene is 5' ATGGCAT 3', the sequence of the MRNA would be: 5’AUGGCAU 3' ОЗ ТАССGTA 5' 3' UACGGUA 5' 5' ATGGCAT 3' O 5' UACGGUA 3'arrow_forwardThe tRNA anticodon sequence 3’GAG 5’ is charged with the amino acid leucine. This anticodon may pair with both 5’ CUC 3’ and 5’ CUU 3’. Which of the following is consistent with this phenomenon? 1. The information provided is not accurate since only the 5’ CUC 3’ codon can complementary base pair with the 3’ GAG 5’ anticodon 2. This feature allows for the genetic code to be degenerate 3. This feature allows for the genetic code to be overlapping 4. This feature is commonly associated with tautomeric shifts 5. This feature causes a change in the encoded amino acidarrow_forward
- A mRNA has the following sequence and direction: 5’-AUGUCAACCUAA-3’ What would be the anticodon sequences formed from this mRNA during the translation process?arrow_forwardPolypeptides can be translated in vitro. Would a bacterial mRNA be translated in vitro by eukaryotic ribosomes? Would a eukaryotic mRNA be translated in vitro by bacterial ribosomes? Why or why not?arrow_forwardConsider the wobble rules listed in Table 15.2. Which of the following mRNA codons will bind to the TRNA anticodon 5' GCU 3', considering wobble-base pairing rules? UGA and CGA AGU and AGC CGA AGC O AGU, AGC, AGA, and AGGarrow_forward
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